diff --git a/mopidy_musicbox_webclient/static/js/controls.js b/mopidy_musicbox_webclient/static/js/controls.js
index 64c066c..a2a6b4a 100644
--- a/mopidy_musicbox_webclient/static/js/controls.js
+++ b/mopidy_musicbox_webclient/static/js/controls.js
@@ -436,7 +436,7 @@ function setMute(nwmute) {
 }
 
 function doMute() {
-    mopidy.mixer.setMute(!mute).then();
+    mopidy.mixer.setMute(!mute);
 }
 
 /*******